We seem to be singing from pretty much the same hymn sheet. I have, and would, eat the occasional lead shot game, because lead is not an instant killer (like arsenic) it's one of those things that can build up in the body and cause problems, usually later in life, or to unborn babies and small children. To prevent this build up we have eradicted lead from food containers (who remembers old tin cans with a lead/tin solder joint?), we have switched to lead free paint, lead free petrol, lead free plumbing (banned since 1970, except in older private houses where the onus is on the owner to have it changed), lead free solder, and stopped selling lead split-shot for fishing. We have done this because lead, in the unnatural form that humans use it, is an environmental pollutant to all life. My concern is for the environment, not my personnal safety if I eat a pheasant that had been shot with lead.
Mike's concern is that any changes in the regulations for shotgun ammunition will, by stealth, creep over into rifles and air rifles. He has a point. The case for banning lead shot is pretty strong, the case for banning lead bullets/pellets is much more debatable.